dnf_updates: new module from scratch

py3status/constants.py

@@ -229,6 +229,10 @@
         "new": ["playerctl"],
         "msg": "Module {old} has been replaced with a module {new}.",
     },
+    "fedora_updates": {
+        "new": ["dnf_updates"],
+        "msg": "Module {old} has been replaced with a module {new}.",
+    },
     "gpmdp": {
         "new": ["playerctl"],
         "msg": "Module {old} has been replaced with a module {new}.",

py3status/modules/dnf_updates.py

@@ -0,0 +1,105 @@
+"""
+Display number of pending updates for Fedora Linux.
+
+Configuration parameters:
+    cache_timeout: refresh interval for this module (default 600)
+    format: display format for this module
+        (default "DNF [\?if=security&color=bad {available}|\?color=available {available}]")
+    thresholds: specify color thresholds to use
+        (default [(0, 'good'), (1, 'degraded')])
+
+Format placeholders:
+    {available} number of pending available updates
+    {bugfix} number of pending bugfix updates
+    {enhancement} number of pending enhancement updates
+    {security} number of pending security updates
+    {unspecified} number of pending unspecified updates
+
+Color thresholds:
+    format:
+        `xxx`: print a color based on the value of `xxx` placeholder
+
+Examples:
+```
+# i3status theme
+dnf_updates {
+    format = "[\?if=security&color=bad DNF: {available}"
+    format += "|\?color=available DNF: {available}]"
+}
+
+# hide module when no available updates
+dnf_updates {
+    format = "[\?if=available DNF [\?if=security&color=bad {available}"
+    format += "|\?color=available {available}]]"
+}
+
+# individual colorized updates
+dnf_updates {
+    format = "[\?if=security SECURITY [\?color=tomato {security}]][\?soft  ]"
+    format += "[\?if=bugfix BUGFIX [\?color=limegreen {bugfix}]][\?soft  ]"
+    format += "[\?if=enhancement ENHANCEMENT [\?color=lightskyblue {enhancement}]][\?soft  ]"
+    format += "[\?if=unspecified OTHER [\?color=darkgray {unspecified}]]"
+}
+```
+
+@author tobes
+@license BSD
+
+SAMPLE OUTPUT
+[{'full_text': 'DNF '}, {'full_text': '14', 'color': '#FF0000'}]
+
+no_updates
+[{'full_text': 'DNF '}, {'full_text': '0', 'color': '#00FF00'}]
+"""
+
+from collections import Counter
+from json import loads
+
+ADVISORIES = ["available", "bugfix", "enhancement", "security", "unspecified"]
+
+
+class Py3status:
+    """ """
+
+    # available configuration parameters
+    cache_timeout = 600
+    format = "DNF [\?if=security&color=bad {available}|\?color=available {available}]"
+    thresholds = [(0, "good"), (1, "degraded")]
+
+    def post_config_hook(self):
+        self.thresholds_init = self.py3.get_color_names_list(self.format, ADVISORIES)
+
+    def _get_dnf_data(self):
+        try:
+            updates = loads(self.py3.command_output("dnf updateinfo list --json"))
+            temporary = (
+                dict.fromkeys(ADVISORIES, 0)
+                | Counter(x['type'] for x in updates)
+                | {ADVISORIES[0]: len(updates)}
+            )
+            cached_until = self.cache_timeout
+        except self.py3.CommandError:
+            temporary = dict.fromkeys(ADVISORIES, None)
+            cached_until = 10
+
+        return (temporary, cached_until)
+
+    def dnf_updates(self):
+        (dnf_data, cached_until) = self._get_dnf_data()
+
+        for x in self.thresholds_init:
+            self.py3.threshold_get_color(dnf_data[x], x)
+
+        return {
+            "cached_until": self.py3.time_in(cached_until),
+            "full_text": self.py3.safe_format(self.format, dnf_data),
+        }
+
+
+if __name__ == "__main__":
+    """
+    Run module in test mode.
+    """
+    from py3status.module_test import module_test
+
+    module_test(Py3status)